Active Weather Alerts
Dense Fog Advisory
Issued: 10:09 AM Jul. 27, 2026 – National Weather Service
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 9 PM CDT THIS EVENING... * WHAT...For the Dense Fog Advisory, visibility as low as 1/2 mile in dense fog. For the Heat Advisory, heat index values up to 101 expected. * WHERE...Dane, Green, Iowa, Lafayette, Rock, Jefferson, and Walworth Counties. * WHEN...For the Dense Fog Advisory, until 8 AM CDT this morning. For the Heat Advisory, from 10 AM this morning to 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. &&
Heat Advisory
Issued: 10:09 AM Jul. 27, 2026 – National Weather Service
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 9 PM CDT THIS EVENING... * WHAT...For the Dense Fog Advisory, visibility as low as 1/2 mile in dense fog. For the Heat Advisory, heat index values up to 101 expected. * WHERE...Dane, Green, Iowa, Lafayette, Rock, Jefferson, and Walworth Counties. * WHEN...For the Dense Fog Advisory, until 8 AM CDT this morning. For the Heat Advisory, from 10 AM this morning to 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. &&
Special Weather Statement
Issued: 6:25 AM Jul. 27, 2026 – National Weather Service
...AREAS OF FOG THROUGH DAYBREAK... Areas of fog will linger over parts of south-central and southwest Wisconsin through sunrise. While widespread dense fog is not expected at this time, visibilities could briefly drop to and below a half mile in spots. Slow down, use low beam headlights, and allow for extra following distance if encountering fog on the roads early this morning.
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